Network diagnostic device



FIG. 1 is a front/left-side/bottom perspective view of the network diagnostic device comprising the present invention;

FIG. 2 is a front/right-side/top perspective view thereof;

FIG. 3 is a rear/right-side/top perspective view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is a side view thereof; and,

FIG. 9 is another side view thereof.

Broken lines are shown for illustrative purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a network diagnostic device, as shown and described. 